Nixon, Kennedy, and Reagan.
This hurts my brain haha whaaat
What they said ...........
Answer:
The International Encyclopedia of the First World War defines attrition warfare as “the sustained process of wearing down an opponent so as to force their physical collapse through continuous losses in personnel, equipment and supplies or [wearing] them down to such an extent that their will to fight collapses.”
Explanation:
don't forget to brainllest:)
The important contribution to navigation made by Eratosthenes in the third-century bc was a reasonably accurate calculation of the circumference of our planet.
Who is Eratosthenes?
Eratosthenes was born in 276 BC and died in 194 BC. He was a well-known poet, mathematician, a researcher in geography, and theorist of music. He was the first to gauge the size of the planet.
The Earth was first measured by Eratosthenes of Cyrene. The precise measurement of Earth's circumference was greatly aided by Eratosthenes' work in the third-century bc.
As a result, the Eratosthenes in the third century bc accurate calculation of the Earth.
Learn more about Eratosthenes, here:
brainly.com/question/1995686
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